MONDAY, OCTOBER 17, 2005

GEOMETRY/TOPOLOGY SEMINAR 667
TIME: 12:20 – 1:20 p.m.
ROOM: 209A Ayres Hall
SPEAKER: Dr. Valeriy Berestovskiy, Visiting Faculty
TITLE: Sufficiently large closed 3-manifolds

DIFFERENTIAL EQUATIONS, APPLIED MATH
AND COMPUTATIONAL SCIENCE SEMINAR
TIME: 3:35 p.m.
ROOM: 104 Ayres Hall
SPEAKERS: Carrie Eaton
George Butler
TITLES: Mutualism, Coevolution and Speciation: A classical model by Kiester, et.al.Codes associated to Algebraic Curves.

TUESDAY, OCTOBER 18, 2005

INFORMAL SEMINAR
TIME: 3:30 p.m.
ROOM: 575 Dabney
SPEAKER: Dr. Sergey Gavrilets
TITLE: The dynamics of Machiavellian intelligence
ABSTRACT: The “Machiavellian intelligence” hypothesis posits that large brains and distinctive cognitive abilities of humans have evolved via spiraling arms race in which social competitors developed increasingly sophisticated “Machiavellian” strategies. I will describe a mathematical model aiming to explore this hypothesis. In the model, genes build brains which invent and copy “memes” which are used by individuals to get advantage in sexual competition. The model is used to identify important factors and parameters and evaluate the relevant timescales in the evolution of intelligence.

WEDNESDAY, OCTOBER 19, 2005

GEOMETRY/TOPOLOGY SEMINAR 667
TIME: 12:20 – 1:20 p.m.
ROOM: 209A Ayres Hall
SPEAKER: Dr. Valeriy Berestovskiy, Visiting Faculty
TITLE: Haken 3-manifolds

ALGEBRA SEMINAR
TIME: 3:35 p.m.
ROOM: 214 Ayres Hall
SPEAKER: George Butler
TITLE: Codes associated to Algebraic Curves II

ANALYSIS SEMINAR
TIME: 3:35 – 4:25 p.m.
ROOM: 309B Ayres Hall
SPEAKER: Marcus Carlsson, Lund University
TITLE: Nontangential limits in spaces of analytic functions, 2

THURSDAY, OCTOBER 20, 2005

PROBABILITY SEMINAR
TIME: 1:10 p.m. – 2:00 p.m.
ROOM: 209A Ayres Hall
SPEAKER: Dr. Xia Chen
TITLE: Moment inequalities for the local times of multi-parameter processes. (Continued)

JUNIOR COLLOQUIUM
TIME: 3:30 p.m.
ROOM: 214 Ayres Hall
SPEAKER: Dr. Jim Conant
TITLE: Euler’s formula and the classification of polyhedra
ABSTRACT: In any convex polyhedron, the number of vertices, edges and faces satisfy a certain linear equation. (Can you figure out what it is?) We will prove this equation (Euler’s formula) and use it to show that there are at most eight convex polyhedra with equilateral faces. The audience will be invited to construct these eight “deltahedra” using plastic triangles which I will bring.

Pizza will be served.

FRIDAY, OCTOBER 21, 2005

TOPOLOGY SEMINAR
TIME: 12:20 - 1:10 p.m.
ROOM: 209B Ayres Hall
SPEAKER: Mr. Atish Mitra
TITLE: Asymptotic Dimension of Metric Spaces - VII

ABSTRACT: Theorem: Let X be a hyperbolic geodesic metric space with bounded growth. Then X has finite asymptotic dimension.

COLLOQUIUM

TIME: 3:30 p.m.
ROOM: 214 Ayres Hall
SPEAKER: Professor Chi-Wang Shu, Brown University
TITLE: Local Discontinuous Galerkin Methods for Dispersive Wave Equations
ABSTRACT: In this talk I will first give a general introduction to the discontinuous Galerkin finite element method for time dependent PDEs and the main technical issues in generalizing this method to solve PDEs with higher spatial derivatives. I will then introduce the recent research of designing stable and convergent local discontinuous Galerkin methods for solving various nonlinear dispersive wave equations, including the Kadomtsev-Petviashvili equations and the Zakharov-Kuznetsov equations. Stability can be proved for quite general nonlinear problems and error estimates can be obtained for the KdV equation and nonlinear convection diffusion equations. Numerical results will also be shown to demonstrate the good qualities of such methods. This is a joint work with Jue Yan and Yan Xu.

REFRESHMENTS WILL BE SERVED IN AYRES HALL ROOM 119 AT 3:00 P.M.